# NozzleCalc vs VSWR Convert +

The clearest difference is price: NozzleCalc at Free against VSWR Convert +'s $0.29. NozzleCalc also leads on iOS requirement (11.0 vs 17.0). VSWR Convert +'s advantage is update cadence (every 8 days vs every 49 months). On ads, in-app purchases and device support there is nothing between them.

NozzleCalc is free to download; VSWR Convert + costs $0.29 up front. Neither carries in-app purchases, so what you see is what you pay.

NozzleCalc ships an update every 49 months, VSWR Convert + every 8 days. The most recent releases landed on October 10, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | NozzleCalc | VSWR Convert + |
| --- | --- | --- |
| Price | **Free** | $0.29 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nozzlecalc/id794048259/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 49 months | **Every 8 days** |
| Monetization | Free | — |
| Size | 13 MB | 1 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Greenleaf Technologies](https://appshunter.io/developer/794048262) | [Jeff Curtis](https://appshunter.io/developer/358219019) |

## What reviewers say

### NozzleCalc

[App page](https://appshunter.io/ios/app/nozzlecalc/id794048259)

Quickly calculate sprayer settings for specific nozzles on the go. Determine optimum droplet size and PSI for your applications. Includes a reference section and direct contact to support.

**Highlights:** Sprayer setting calculations, Droplet size determination, PSI calculation, Customizable application rate, speed, and spacing, Reference section, Direct contact to support

**Features:** macOS Compatibility

**In-app purchases:** none


### VSWR Convert +

[App page](https://appshunter.io/ios/app/vswr-convert-plus/id6445927210)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is NozzleCalc free?

NozzleCalc is free to download, with no in-app purchases.

### Is VSWR Convert + free?

VSWR Convert + costs $0.29, with no in-app purchases.

### Do NozzleCalc or VSWR Convert + have ads?

Neither NozzleCalc nor VSWR Convert + shows ads.

### Which is updated more often, NozzleCalc or VSWR Convert +?

NozzleCalc ships an update every 49 months, and VSWR Convert + every 8 days. Most recently, NozzleCalc was updated on October 10, 2026 and VSWR Convert + on October 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*